nomacs toolbar

Image Viewing

  • supports the most common image formats including RAW (see table below)
  • fast thumbnail preview (Screenshot)
  • zoomable grid preview of thumbnails
  • display exif information (Screenshot)
  • framless view (Screenshot)
  • change transparency of windows (Screenshot)
  • display overview/histogram/file info (Screenshot)
  • file filtering/searching/sorting
  • improved anti-aliasing (cool for displaying highly textured images)
  • hide menubar and toolbar
  • slideshow
    • image information (e.g. date created)
    • play/pause with user defined time interval
    • adjustable background color

Image Editing

  • crop images (Screenshot)
  • resize images (Screenshot)
  • pseudo color function (Screenshot)
  • color adjustments (brightness/contrast/saturation …)
  • multi page TIFF export (Screenshot)
  • rotate images
  • drag and drop images
  • automatically save screenshots
  • delete/rename images
  • create mosaic image (Howto)
  • set wallpaper (windows only)

Viewer Synchronization

  • synchronize multiple instances (Screenshot) (Howto)
    • synchronized zooming
    • synchronized panning
    • synchronized next/previous file
    • overlay of two or more instances (with changing opacity)
    • arrange synchronized instances
  • synchronize multiple instances in the LAN (Howto)
    • synchronized zooming
    • synchronized panning
    • images can be sent over LAN connection
File Extension Read Write Comment
jpg x x
png x x
tif x x including Multi Page
bmp x x
ppm x x
xbm x x
xpm x x
jpeg2000 x x Windows only
webp x x
gif x
ico x no scales
pbm x
pgm x
nef x
crw x
cr2 x
arw x
mrw x
rw2 x
dng x
mpo x just main image is displayed
jps x
pns x
psd x
psb x
tga x

10 thoughts on “Features”

  1. Hi – guter Ansatz, feine Arbeit. Ist es möglich über die CommandLineArgs Nomacs anzuweisen nur eine Instanz zu verwenden?

    danke und vg andi

    1. Thanks. It is possible to send an image to an external program via the File->”Open With” Function. Perhaps you have to add your application via the “Manage Applications” Dialog where you have to set the path for your program. Afterwards you can also assign a shortcut to a specific program using File -> “Keyboard Shortcuts”

  2. Hello. I love this program. <3
    But I use Ubuntu and, I think, many other users and, of course, I, would be very grateful and pleased if in the new versions appeared option "set wallpaper" for Ubuntu too, not just only for Windows.

    Sorry for my bad english and thank you for the great soft!

    1. Hi,
      thank you.
      It’s not easy to add this functionality for Linux so that it will work with all desktop managers. Thus we recommend using the set wallpaper function of the desktop manager.

  3. I really like this application. I searched a long time something like this with windows and linux support. Just one question is it possible to view Gimps xcf-Files?

    1. Hi,

      thanks for pointing this out. NRW is already supported. It is not added to the default extensions yet. You can add it File > Add Image Format – then drop an NRW file in the dialog. We will add it to the default extensions with the next release.
      if you want to set nomacs as default app for NRW files, you can open Edit > Settings > File Filters and then check the ‘register’ box there (after you have added the image extension).


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